body{margin: 0px;padding:0px; list-style: none}
.demo-carousel{height: 200px; line-height: 200px; text-align: center;}
.code {
    width: 400px;
    margin: 0 auto;
}
.input-val {
    width: 295px;
    background: #ffffff;
    height: 2.8rem;
    padding: 0 2%;
    border-radius: 5px;
    border: none;
    border: 1px solid rgba(0,0,0,.2);
    font-size: 1.0625rem;
}
#canvas {
    float: right;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 5px;
    cursor: pointer;
    height: 30px;
    width: 110px;
}
.btn {
    width: 100px;
    height: 40px;
    background: #f1f1f1;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin: 20px auto 0;
    display: block;
    font-size: 1.2rem;
    color: #e22e1c;
    cursor: pointer;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}